Hyundai ABS Pump, Module and HECU Repair
Summary: Hyundai and Kia call it the HECU. You searched for an ABS pump. The parts catalogue calls it something else again — one component, four names. Here is what fails, how to check for a recall, and what the repair involves.
Four names for one part is the first obstacle when the brakes on a Hyundai or Kia misbehave, so this page starts there. Hyundai work sits inside our wider ABS pump and module repair service.
HECU, ABS pump, ABS module — one box, four names
HECU is short for Hydraulic Electronic Control Unit — the term Hyundai and Kia use in their own technical and recall documentation. It names one assembly: the hydraulic valve block that meters brake pressure to each wheel, the pump motor, and the control module that decides when to intervene.
Everyone else calls it something else. Owners search for an ABS pump; diagnostic reports say ABS or ESC module; the parts catalogue lists a UNIT ASSY-ABS with an assembly number beginning 58910- or 58920-, on a label on the casing.
Where a Hyundai ABS fault usually shows itself
The unit lives in the engine bay under heat and vibration, handling brake fluid that collects moisture over the life of the car. It degrades in recognisable ways.
- ABS and ESC lamps lit together. Both functions live in the same unit, so one fault takes out both — why the ABS and traction control lights come on together.
- Brakes binding, dragging or pulling to one side. The hydraulic half is not releasing pressure evenly. Do not keep driving on brakes behaving like this.
- The pump motor running constantly, or not at all. C2402, a pump motor fault, recurs across Hyundai models.
- Wheel-speed-sensor codes with nothing wrong at the wheel. A degraded unit mishandles the signals reaching it, so the code names the sensor, not the thing reading it. Checking an ABS wheel speed sensor rules that out first.
- No response on a scan tool. A unit that cannot be reached reads as missing — see ABS module no-communication faults.
A lamp that stays on also means the anti-lock function may not intervene in an emergency stop, and it raises a second question: whether an ABS light fails an MOT.
Two supplier families, split roughly by age
Age matters more than model name here. Mando, the Hyundai/Kia group’s own Korean supplier, fitted its MGH-60 ESC unit widely across older and mid-age cars, the Santa Fe among them. Continental’s ATE MK100 is the newer generation, arriving in the early 2010s and carried by the Kona, the later i10 and much of the Kia range. Bosch hardware turns up on some models too — the i20 and i30 among them.
We work across all three. The Bosch 8.0 generation and the ATE/Teves units have pages of their own; send the number or a photograph of the label and we will confirm what you have.
Check your VIN before you do anything else
Hyundai and Kia have issued repeated recalls on ABS and HECU units that can leak brake fluid internally and cause an electrical short, with a risk of an engine-compartment fire. If your VIN is covered, a franchised dealer does the work free of charge — take that route. Hyundai UK and Kia UK publish VIN checks, and the DVSA recall service covers UK-registered cars.
Most Hyundai ABS faults are not recall work. Cars outside the affected batches, campaigns already completed and faults with nothing to do with fluid migration are what reach our bench. We do not perform recall work and are not a substitute for it.
What happens to the unit once it reaches the bench
Your garage removes the unit and posts it in; the car stays where it is.
- Send the assembly with your codes
Valve block, pump motor and control module travel together, with the fault codes and the lamps that are lit.
- Tested, repaired, tested again
We run it under pressure and under load until the failure shows itself, put it right, then prove it on the rig.
- Back as your own unit
It returns with your vehicle’s own data on it, so it does not normally need coding. Removing it opened the hydraulics, so the brakes are bled on refitting — an ABS bleed with a diagnostic tool on some cars; your garage handles both.
Answers before you send anything
Will a repaired Hyundai ABS unit need coding?
Not normally. You get back the unit you sent rather than a different one, so your vehicle’s own data stays on it. Your garage clears the codes and bleeds the brakes on refitting.
Can you help if the recall does not cover my car?
Yes. A recall covers a defined batch of VINs; a failed ABS unit outside that batch is an ordinary repair, and that is what we do.
Do I need to know the part number before I send it?
No. Send it with the codes and what the car is doing. We identify the unit here; the number on the casing just makes it quicker.
Sinspeed · one box, whatever your paperwork calls it
Check the recall first. If you are not covered, we can repair it.
Send your fault codes and the number off the casing and we will confirm the unit first.
Electronic and hydraulic engineers under one roof · Every unit proved on the test rig before dispatch · Lifetime, unlimited-mileage warranty
